Their answer was:
Currently, there is no attack for the Ledger but we’re working on it.
That is going to be interesting to see, he is certainly working on something new.
It's possible to hack almost anything if you have the right tools and skills, especially if you have the right insider information available.
My theory is that he could find a way to hack old ledger model S device, than ledger can say how they already retired this device and issue was already fixed in model X and S plus
There is higher chance for older chips to get hacked, but he needs to think outside the box to perform this attack with success.